Results 11 to 20 of about 31,268 (166)

Energy exchange and wave action conservation for magnetohydrodynamic (MHD) waves in a general, slowly varying medium [PDF]

open access: yesAnnales Geophysicae, 2014
Magnetohydrodynamic (MHD) waves in the solar wind and magnetosphere are propagated in a medium whose velocity is comparable to or greater than the wave velocity and which varies in both space and time. In the approximation where the scales of the time
A. D. M. Walker
doaj   +1 more source

Peculiarities of ULF wave characteristics in a multicomponent ionospheric plasma

open access: yesSolar-Terrestrial Physics, 2022
We have examined the properties of low-frequency electromagnetic waves in multicomponent ionospheric plasma in the 1–30 Hz band, using the magnetoionic theory.
Kotik D. S.   +2 more
doaj   +1 more source

Mixed Properties of MHD Waves in Non-uniform Plasmas

open access: yesFrontiers in Astronomy and Space Sciences, 2019
This paper investigates the mixed properties of MHD waves in a non-uniform plasma. It starts with a short revision of MHD waves in a uniform plasma of infinite extent. In that case the MHD waves do not have mixed properties.
Marcel L. Goossens   +3 more
doaj   +1 more source

Simulations of Incompressible MHD Turbulence [PDF]

open access: yes, 2000
We simulate incompressible MHD turbulence in the presence of a strong background magnetic field. Our major conclusions are: 1) MHD turbulence is most conveniently described in terms of counter propagating shear Alfven and slow waves.
Goldreich, Peter, Maron, Jason
core   +4 more sources

Propagating MHD Waves in Coronal Holes [PDF]

open access: yesSpace Science Reviews, 2010
Coronal holes are the coolest and darkest regions of the solar atmosphere, as observed both on the solar disk and above the solar limb. Coronal holes are associated with rapidly expanding open magnetic fields and the acceleration of the high-speed solar wind.
Banerjee, D, Gupta, GR, Teriaca, L
openaire   +3 more sources

Electromagnetic oscillations of the Earth's upper atmosphere (review) [PDF]

open access: yesAnnales Geophysicae, 2010
A complete theory of low-frequency MHD oscillations of the Earth's weakly ionized ionosphere is formulated. Peculiarities of excitation and propagation of electromagnetic acoustic-gravity, MHD and planetary waves are considered in the Earth's ...
A. G. Khantadze   +5 more
doaj   +1 more source

The Exact Solution of the Riemann Problem in Relativistic MHD [PDF]

open access: yes, 2006
We discuss the procedure for the exact solution of the Riemann problem in special relativistic magnetohydrodynamics (MHD). We consider both initial states leading to a set of only three waves analogous to the ones in relativistic hydrodynamics, as well ...
Giacomazzo, B., Rezzolla, L.
core   +2 more sources

Linear and nonlinear resonant interaction of sound waves in dissipative layers [PDF]

open access: yes, 2000
The theory of resonant nonlinear magnetohydrodynamic (MHD) waves in dissipative steady plasmas developed by Ballai and Erdélyi is used to study the effect of steady flows on nonlinear resonant heating of MHD waves in (a) linear, (b) weakly and (c ...
Ballai, I., Erdélyi, R., Goossens, M.
core   +1 more source

Ducted compressional waves in the magnetosphere in the double-polytropic approximation [PDF]

open access: yesAnnales Geophysicae, 2002
Small-amplitude compressional magnetohydrodynamic-type waves are studied in the magnetosphere. The magnetosphere is treated as a rarefied plasma with anisotropy in the kinetic pressure distribution.
I. Ballai   +4 more
doaj   +1 more source

Cosmic ray fluctuations and MHD waves in the solar wind

open access: yesSolar-Terrestrial Physics, 2023
During large-scale solar wind disturbances, variations in galactic cosmic rays with periods from several minutes to 2–3 hours, which are called cosmic ray fluctuations in the scientific literature, often occur.
Starodubtsev S. A.   +3 more
doaj   +1 more source

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